208078975

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{1087}}^1$

素因数の和:1160

約数の個数: 48

約数和(自身を含む): 302202880

約数和(自身を除く): 94123905

約数列:

[1, 5, 13, 19, 25, 31, 65, 95, 155, 247, 325, 403, 475, 589, 775, 1087, 1235, 2015, 2945, 5435, 6175, 7657, 10075, 14131, 14725, 20653, 27175, 33697, 38285, 70655, 103265, 168485, 191425, 268489, 353275, 438061, 516325, 640243, 842425, 1342445, 2190305, 3201215, 6712225, 8323159, 10951525, 16006075, 41615795, 208078975]

約数ペア:

[(1, 208078975), (5, 41615795), (13, 16006075), (19, 10951525), (25, 8323159), (31, 6712225), (65, 3201215), (95, 2190305), (155, 1342445), (247, 842425), (325, 640243), (403, 516325), (475, 438061), (589, 353275), (775, 268489), (1087, 191425), (1235, 168485), (2015, 103265), (2945, 70655), (5435, 38285), (6175, 33697), (7657, 27175), (10075, 20653), (14131, 14725)]